User manual

BIOS Setup
56
POST
Code
(Hex)
Name Description
49h
PCI_INIT
Initialize PCI to PCI bridges.
Reset all PCI devices.
Send self test command to all PCI
devices.
Configure base registers of all PCI
devices.
4Ah
VIDEO
Initialize all MDA video adapters.
Initialize all CGA video adapters.
Execute VGA option ROMs to initialize
VGA adapter.
Initialize VSA.
4Bh
QUIETBOOT_STA
RT
Initialize Quietboot if installed.
Enable IRQ0 and IRQ1.
4Ch
VID_SHADOW
IF <video shadow enabled in setup>
THEN
IF <CMOS valid and last boot
successfule> THEN
Shadow video BIOS ROM.
ENDIF
ENDIF
4Eh
CR_DISPLAY
Display the CPU type and speed on the
screen.
51h
EISA_INIT
IF <EISA support is enabled> THEN
Checksum EISA data NVRAM
locations.
IF <checksum good> THEN
Initialize each slot.
ELSE
Display bad config message.
ENDIF
ENDIF
52h
KB_TEST
Check for return code of AA from
keyboard self-test,
IF <return code not AA> THEN
Set keyboard error flag
ENDIF
54h
KEY_CLICK
IF <keyclick enabled and keyboard good>
THEN
Initialize key stroke clicker
ENDIF
56h
ENABLE_KB
Send command to keyboard controller to
enable the keyboard.